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Showing results for "sampling".

  1. THE HCUP NATIONWIDE AMBULATORY SURGERY SAMPLE (NASS) 2019

    hcup-us.ahrq.gov/db/nation/nass/NASS_Introduction_2019.jsp
    January 01, 2019 - Build the NASS hospital sampling frame. … Return to Introduction   3.4.2 NASS Sampling Strata Sampling strata were selected using results … This led to relaxing the number of sampling frame hospitals or sampling fraction criteria for some strata … Frame 2019 Population States Not in NASS Sampling Frame Total 2019 Population States in NASS Sampling … The overall sampling fraction for the 2019 universe of hospitals and sampling frame is (2,958/4,362)

  2. Nis 1998 Hospital (pdf file)

    hcup-us.ahrq.gov/db/nation/nis/NIS_1998_Hospital.pdf
    January 01, 1998 - For detailed information about the NIS sampling design, see the year-specific report on the Design of … For detailed information about the NIS sampling design, see the year-specific report on the Design of … For detailed information about the NIS sampling design, see the year-specific report on the Design of … For detailed information about the NIS sampling design, see the year-specific report on the Design of … Some strata were combined for sampling and weight calculations.

  3. http://172.16.18.243/db/nation/nis/nishospnotes.jsp (pdf file)

    hcup-us.ahrq.gov/db/nation/nis/NIS_1999_HOSPITAL.pdf
    January 01, 1999 - For detailed information about the NIS sampling design, see the year-specific report on the Design of … For detailed information about the NIS sampling design, see the year-specific report on the Design of … For detailed information about the NIS sampling design, see the year-specific report on the Design of … For detailed information about the NIS sampling design, see the year-specific report on the Design of … Some strata were combined for sampling and weight calculations.

  4. Medication Turnaround Time in the Inpatient Setting (pdf file)

    digital.ahrq.gov/sites/default/files/docs/page/medication-turnaround-time-quick-reference-guide.pdf
    August 05, 2025 - Time­motion or work sampling studies: For an observational study, collect tasks, time spent on tasks … Time­motion or work sampling studies also may be conducted using a personal digital assistant (PDA … (For guidance on sampling, please see the Health IT Evaluation Toolkit11). … A comparison of work sampling and time and motion techniques for studies in health services research … Work sampling: a decision making tool for determining resources and work redesign.

  5. INTRODUCTION TO THE HCUP KIDS' INPATIENT DATABASE (KID), 2009

    hcup-us.ahrq.gov/db/nation/kid/kid_2009_introduction.jsp
    January 01, 2009 - Return to Introduction SAMPLING OF DISCHARGES Sampling of Discharges Included in the KID Unlike … Sampling Procedure The KID includes a sample of pediatric discharges from all hospitals in the sampling … R k is the frame sampling rate for non-newborns from all non-newborn discharges in the sampling frame … Confidentiality of Hospitals - Limitation on Sampling Limitations on sampling were needed for … "KID Sampling-Frame Hospitals" lists hospitals with pediatric discharges in the sampling frame after

  6. Final Progress Report: Optimizing Detection of MRSA Carriage (pdf file)

    www.ahrq.gov/sites/default/files/2024-12/doi-report.pdf
    January 01, 2024 - The use of sponge in lieu of swab enables sampling of a large skin area and generally improves the … skin colonization with sponge, which in practice could be performed by using one sponge with serial sampling … However, the sensitivity achieved by sampling of the skin with sponge (64.4%) did not appear sufficient … Third, the best sensitivities were achieved by combining the nasal swab with a second method: sampling … of the skin with a sponge (86.4%) or sampling of the pharynx with a swab (72.9%).

  7. 2017-01 (pdf file)

    hcup-us.ahrq.gov/reports/methods/2017-01.pdf
    January 01, 2017 - https://www.ahadataviewer.com/glossary/ HCUP (01/24/2017) 2 NRD Variance Report The sampling … Survey Sampling Principles. New York: Dekker; 1991, Chapter 10. … Under the finite population model, the variances of estimates approach zero as the sampling fraction … Sampling: Design and Analysis. Pacific Grove, CA: Brooks/Cole Publishing Company; 1999. … SAS /* Specify the sampling design with sampling weights DISCWT, */ /* hospital clusters HOSP_NRD

  8. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)

    hcup-us.ahrq.gov/db/nation/kid/KID_2009_Introduction.pdf
    January 01, 2009 -  Rk is the frame sampling rate for non-newborns from all non-newborn discharges in the sampling … o One stand-alone children’s hospital was excluded from the sampling frame. … No hospitals were dropped from the sampling frame. … were fewer than two hospitals in a sampling stratum. …  “KID Sampling-Frame Hospitals” lists hospitals with pediatric discharges in the sampling frame

  9. INTRODUCTION TO THE HCUP NATIONWIDE INPATIENT SAMPLE (NIS), 2008

    hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2008.jsp
    January 01, 2008 - SAMPLING OF HOSPITALS Sampling of Hospitals Included in the NIS The NIS Hospital Universe The … Change to Hospital Sampling Procedure Beginning with the 1998 NIS Beginning with the 1998 NIS sampling … for hospital-level sampling weights. … Confidentiality of Hospitals - Limitation on Sampling Limitations on sampling were required … were fewer than two hospitals in a sampling stratum.

  10. Table 2: NIS and NHDS Comparisons by Region, 1999 (pdf file)

    hcup-us.ahrq.gov/reports/methods/1999NISComparisonReportFinal.pdf
    March 08, 2002 - specifications of the new NIS sampling strategy. … NIS Sampling The overall sampling objective was to select a sample of hospitals that could be generalized … Sampling error can be expected in both the NHDS and the NIS. … Because the sampling error in a stratified sample is the sum of the stratum- level sampling errors (Lehtonen … First, some differences exist in the sampling strategies used.

  11. Introducing the CAHPS Cancer Care Survey" Transcript (pdf file)

    www.ahrq.gov/sites/default/files/wysiwyg/cahps/news-and-events/events/webinars/cahps-cancer-care-transcript.pdf
    June 01, 2017 - And the CAHPS Consortium asked us to update the sampling algorithms from ICD-9 to -10. … Some cancer types do not have a surgery sampling algorithm. … So, we're going to suggest a minor change to the sampling algorithm logic. … It also lets you apply sampling where it's appropriate. … So, I think the approach to take would be to create separate sampling frames.

  12. 2006 05 Nistrendsreport 1988-2004A (pdf file)

    hcup-us.ahrq.gov/reports/methods/2006_05_NISTrendsReport_1988-2004A.pdf
    January 01, 2006 - o Redefined the hospital stratification variables for sampling. … States Added to or Subtracted From the Sampling Frame. … the NIS increased as new States were added to the sampling frame. … This decrease is associated with the expanding sampling frame. … In particular, as the sampling frame increased over time, we were more successful at sampling 20 percent

  13. INTRODUCTION TO THE HCUP NATIONWIDE INPATIENT SAMPLE (NIS), 2007

    hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2007.jsp
    January 01, 2007 - SAMPLING OF HOSPITALS Sampling of Hospitals Included in the NIS The NIS Hospital Universe The … Change to Hospital Sampling Procedure Beginning with the 1998 NIS Beginning with the 1998 NIS sampling … for hospital-level sampling weights. … Confidentiality of Hospitals - Limitation on Sampling Limitations on sampling were needed for … were fewer than two hospitals in a sampling stratum.

  14. Methodology Report #34: Sample Design of the 2020 Medical Expenditure Panel Survey Insurance Component

    meps.ahrq.gov/data_files/publications/mr34/mr34.shtml
    August 01, 2021 - important for researchers using the data who wish to understand the details of its sampling … The two sampling frames are as follows: Private-sector The U.S … Figure 1 provides an overview of the sampling processes and sample sizes in 2020. … To perform the selection using probability proportional to size (PPS) sampling, each … Sampling Techniques, 3rd Edition . 1977.

  15. Sample Design of the 2020 Medical Expenditure Panel Survey Insurance Component (pdf file)

    meps.ahrq.gov/data_files/publications/mr34/mr34.pdf
    August 01, 2021 - information is important for researchers using the data who wish to understand the details of its sampling … This report describes the data collection, sample design, sampling allocation, and sample selection … The two sampling frames are as follows: Private Sector The U.S. … Figure 1 provides an overview of the sampling processes and sample sizes in 2020. … Sampling Techniques, 3rd Edition. 1977. John Wiley and Sons, New York. Davis, K.

  16. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)

    hcup-us.ahrq.gov/db/nation/nis/2006NIS_INTRODUCTION.pdf
    November 01, 2015 - The NIS-Trends weights account for this change in NIS sampling. … SAMPLING OF HOSPITALS Sampling of Hospitals Included in the NIS The NIS Hospital Universe The … Change to Hospital Sampling Procedure Beginning with the 1998 NIS Beginning with the 1998 NIS sampling … No hospitals were dropped from the sampling frame. … were fewer than two hospitals in a sampling stratum.

  17. Calculating Variances Using the 1999 Nationwide Inpatient Sample (pdf file)

    hcup-us.ahrq.gov/reports/methods/2005-07.pdf
    January 01, 2005 - The KID includes a sample of pediatric discharges from all hospitals in the sampling frame. … As the sampling fraction f approaches 1, the sampling variance approaches zero. … It can accommodate very large sampling frames. … PROC SURVEYSELECT accepts the sampling frame as a SAS data set. … without replacement of sampling units within strata.

  18. Calculating Variances Using the 1999 Nationwide Inpatient Sample (pdf file)

    hcup-us.ahrq.gov/db/nation/kid/reports/CalculatingKIDVariances.pdf
    December 16, 2005 - The KID includes a sample of pediatric discharges from all hospitals in the sampling frame. … As the sampling fraction f approaches 1, the sampling variance approaches zero. … It can accommodate very large sampling frames. … PROC SURVEYSELECT accepts the sampling frame as a SAS data set. … without replacement of sampling units within strata.

  19. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)

    hcup-us.ahrq.gov/db/nation/nis/NISIntroduction2019.pdf
    September 01, 2021 - The new sampling strategy produces more precise estimates than the previous NIS design by reducing sampling … sampling error. … The NIS sampling and weighting strategy was also revised in 1998. … Overview of the Sampling Procedure The strata for the 2012 and later NIS systematic sampling design … Thus, the sampling rate would not always be 20 percent for each stratum.

  20. Recruiting/Selecting Participants (pdf file)

    effectivehealthcare.ahrq.gov/sites/default/files/delilberative-methods-design-goold.pdf
    October 08, 2025 - Medicine and Health Management and Policy University of Michigan Slide 11 Alternatives to Random Sampling … those who tend to be poorly represented in policy decisions Slide 12 Alternatives to Random Sampling
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